Former employer is delaying arbitration process: What’s the remedy

The matter between me and my former employer has been referred for arbitration. The defendant/employer failed to file required documents on more than three occasions. The matter should have long been finalised since I am of the view that failure to respond is tantamount to the defendant abandoning the matter. Six months have passed and the arbitrator has still not responded to our plea for an award and he basically did not bother to offer any response since March 2018 despite our concerted efforts and almost 10 reminders. I feel that justice delayed is justice denied. What is my remedy for this matter?